Based on the best-selling shape in the world, the contoured shape with textured rubber grips keeps your hand happya"even after long hours. Combine fashion and function with this Logitech Party Collection wireless mouse. It's small, compact, responsive and reliable from up to 33 feet away for added workspace freedom, and its preinstalled battery lasts up to 18 months for uninterrupted use. *Battery life may vary based on user and computing conditions. * This Logitech Party Collection wireless mouse has a fun, colorful design to match your personal style.